HELP ..Runs dies No start .. then start

Yeah, the gap was correct because I checked it several times, along with everything else, ....AND it ran with the new pickup and old ECU.. I am at a loss as to what the hell happened. Thank you for the help !



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Dude i bet you its the harness open it up and look behind your ignition switch. Your probably pulling and tugging on the harness thus sometimes it works some times it doesnt.